To make the miniaturized effect really noticeable I'd shoot the scene from above and tilt the lens down. You'll have to crop the images to fit them in the HD video aspect ratio (16:9) so you'll lose a fair bit of blur. When you crop try to make sure your sweet spot extends to at least one of the image borders so as to create the shallow depth of field look you're going for.
Good luck and let us know how it goes!

Edited 1 time(s). Last edit at 09/01/2011 04:23AM by Michael from Lensbaby.

thank you Michael!
of course i will shot scene from above but 35 mm should be 50 mm angle on aps-c format so: Do you think that the 35 mm (50 on aps-c) need also "wide angle accessories" to help me with miniature or is it not necessary on aps-c?